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8. April-May 2011 and May-June 2012, Visiting Professor, Laboratoire de Mathematique, Universite Rouen, France.
7. February-April 2008, Visiting Professor, Department of Mathematics, Shenzhen University, People's Republic of China.
6. January-February 2004, Visiting Professor, Auckland University of Technological, New Zealand.
5. May-June 2002, Visiting Professor, Department of Mathematics of the University of Murcia, Spain.
4. April 2002, Visiting Professor, Slovak Academy of Sciences, Bratislava, Slovakia.
3. April-June 1997, Associate Scholar, Cambridge University, England.
2. March-May 1992, Visiting Professor, University of Auckland, New Zealand.
1. February 1992, Visiting Professor, University of Tsukuba, Ibaraki, Japan. |
